It’s case to case basis, Some casino count all the bets made and not only the amount you win/lose since I use this method frequently. I still didn’t play on casino that doesn’t count total bets on roulette however on some casino they totally disable any bet that has a high possibility of a breakeven outcome like betting on both side to roulette.
At the time doing those scheme, I kinda dumb cause my first time.
TBH, I'm not a player who love playing with deposit bonus. I love raw, etc and for the bonus just depends on rakeback, weekly or other bonus are mostly came with small waggering like 1-3 or maybe none.
I'm not saying these was bad, but just not suitable for my gameplay.